Drying and mixing device.



H- M. KINGSLEY.

DRYING AND MIXING DEVICE. v APPLIGATIQN FILED JUNE 29,1908.

Patented Jan. 18,1910.

2 SHEETS-SHEET 1.

I awake H. M; KINGSLEY.

DRYING AND MIXING DEVICE.

APPLICATION FILED mm". 29,1908.

Patented Jan. 18, 1910.

2 SHEETS-SHEET (J m m M 1., v 5 M 3 I. fziy has new "his as FFiQ HENRYM. KINGSLEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

DRYING AND MIXING- :onvros.

Application filed June 29 1908. v Serial ltlo eflfim.

To all wi om it may concern:

Be it known thatI, HENRY h/L KINGSLEY, citizen of the "United States,residing at Washington, in the Dist-rictof Columbia,

have inventedcertain new and useful'lmprovements in Drying andMixingDevices, of which the following is a specification.

The presentlnvention relates .to a novel -mechanismj fort-hemanufacture. of plastic 1; compounds of'that type in-Which it is desired to thoroughly, dry the aggregate before adding the binder-orcement and in which thebinder must be softened-and made plastic qwhilemim'ng loythe: application Oiheat;

" The object of the'invention is the provision of a' device of thischaracter which will" enable the various ingredients to be dischargedinto the-mixing drum in the required proportions and which will operate111 an efiective mannerfto produce'a rapid I and uniform mix ng ofthesaid ngredients.

' For a full understand n 'foi the invention and the merits thereofandalso to acquire a knowledge ofthe details of construction and themeans tor efiecting the result, reference isito' be had'to the followingdeseription and accompanying drawings, in which:

Figure '1 is a side elVatiohpf the pre ferred embodiment of the; mixingmachine, portions being shown insection. Fig. 2-is' a' verticaltransverse sectional :view. throughthe same. Fig.3 is anend view. -Fig.4

is an enlarged transverse sectional view" through iaportion' of one of.the'inixing drums. Fig. 5 is a planview-showing -a form of atruck 1 soas to be readily trans-5' ported from place touplace although itisentirely obvious that should it be found desirable the plantcould bemounted upon a' stationary base. I v y As shown in Fig. 1 a mixing drum21s mounted upon each end of the truck, the.

,upon the truck below the frame 12 is mixingdrums having a substantiallycylindrical formation and resting upon the roll ers3 so as'to be turnedabout their longitudinal axes with a comparatively small amount offriction. These rollers 3 are carried by the shafts 4 i'vhichareiournaled Within suitable bearings projecting upwardly from the truck.For the purpose of' preventing longitudinal displacement of the mixingdrums they are provided upon their exterior with "the annular rails .5which engage the.

rollers The tvvo mixing drums receive motion from a shatt 6 which isjournaled. .Withinbearings 7 projecting. downwardlyfrpni the 'truck, theshaft being provided with 'a drive Wheei 8 designed to receive powerfrom any suitable -source, and 'also with the pulleys 9 engaging thebands 10 which passaround the mixing drums and are received within thegrooved ribs. 11 thereon. Mounted upon the truck 1 between the twomixing drums is a frame. 12 which supports the hopper 13 from which themat'erials tojhe mixed are discharged into the drums. This hopperdischares-into the intenor ct the respective diums through. spouts 15 and thesespouts'lead to openingsin the ends of the drums and are provided Withvalves 216 which enabie therequired Specification of Letters Eatent.Patented Jail. 18, 191i);

amount of material to be measured in the hoppers and-subsequentlydischarged into the ru ns by opening the valves .v Arran eda illinacc 17which may he cit any suitable type and may employ any desired fuel,either.

liquid or solid. In the present instance the furnace is provided with acrude oil burner- 18 and the heated airenters the mixing drumsthrou'ghpassages 19 leading to the openings in the endsot the 'drum' and'.di$-posedunder-the; spouts 15 of the hoppers.

It will thus be obvious that as the material is discharged into. thedrum from the "hop- .pers it will be droppedthrough a current of heatedair.

' More specifically describing'the fm'ixing drums it"willheobservedrfrom an inspection of Fig. 5' that theyfare speciallyconstructed .so as to retain theheat producedby he furnaceand comprisean outei'shell 2 o1', metal which is separated from theinri.ei-.--'shellx2 of metal by a layer. 2fof' fasbestos or similarnon-heat conducting material. The interior of each of the drums is alsoprovided with a number of inwardly projecting blades which are arrangedat an angle to the longitudinal axisjof the drum. in groups, the blades20 of one set of groups being inclined in onedirection while the blades20 of the opposite set of groups are inclined in an opposite direction.These va-' rious groups are arranged alternately with respect to eachother and as the drum is revolved tend to cause the ingredients to movetoward opposite ends of the drum. It will thus be obvious'that duringthe mixing op eration the blades 20' and 20 projecting within the drumserve the double function of elevating the ingredients within the drumand dropping them through the heated current of air produced by thefurnace and also of moving the ingredients toward opposite ends of thedrum as they are acted upon by the successive groups of blades. It mayalso be mentioned that the end portions of the blades are extendedoutwardly at 20 to the openings in the opposite ends of the drum, thematerial being received through one of the openings and dischargedthrough the opposite opening.

For the purpose of discharging the ingredients after they have beenthoroughly mixed a chute 21 is provided and this chute is suspended atan intermediate point in its length b means of hangers 22 which areconnecte arm 24 projecting laterally from the upper end of a post 25which is mounted to revolve about a vertical axis. YVhen it is desiredto discharge the ingredients from the drum one end of the chute 21 isinserted through'the opening in the drum so that as the latter isrevolved theblades will elevate the material and drop it upon the chute,the chute being held in an inclined position so that the materialdeposited thereon may be discharged into a wagon or other suitablereceptacle provided for that purpose. After the contents of the drumhave been removed the chute 2,1 is withdrawn therefrom and the post 25and cross bar 23 are turned so that the chute will hang in anout-of-the-' way position.

In the operation of the device the material is placed in the hopper 13'and after bein measured therein is permitted to enter the drums. Asthedrums are revolved the'aggregate, is successively elevated anddropped'through the current of heated air produced by the furnace untilthoroughly dried. The binder which may be of a bituheat and thoroughlymixed with the aggre-' gate. It. will thus be obvious that with thepresent construction the heat is utilized both These blades are disposedY to a cross bar 23 carried by an;

- spouts.

for drying the aggregate and for softening the binder so as to retainthe same in a soft and plastic condition during the mixing op eration.

A slight modification of the invention is tion of the interior of thedrums,

nor the manner of discharging tl'iercixing drums, for the reason thatthis suh ect ter has been divided out of the pi and constitutes thebasis for a co-penaing visional application.

Having thus described the invention, what is claimed as new is:

1. In a device of the character described, the combination of a support,a pair of mix ing drums mounted upon the support to retate about ahorizontal axis, the said mixing drums being formed with end openings, aframe project-ing upwardly from the support between the mixing drums,ahopper mounted upon the frame and formed with spouts adapted todischarge into either of the ,mixing drums through the end openingsthereof, a furnace mounted under the frame apd adapted to cause heatedair to enter the niixing drums through the end openings thereof, andmeans for rotating the mixing drums.

2. In a mixing apparatus, the combination with a wheeled support, of apair of drums mounted upon the opposite ends of the support in spacedrelation to each other, said drums both having a feed opening throughtheir inner ends and outiet openmutually rotating said drums, a hopperdis- .posed between 4 said drums and having spouts entering the feedopenings of both drums, and a furnace located beneath the hopper andheating the same and having opposed fiues leading tothe feed openings ofboth drums and located beneath said.

3. A mixing apparatus comprising a wheeled frame, opposed drumsrotatabiy mounted upon the wheeled frame, the inner ends of" the drumsbeing toward the middle of the frame, each drum having an inner feedopening and an outer discharge opening, a longitudinal power shaft onthe wheeled frame, gearings whereby the drums may be rotated from thepower shaft, a hopmaterial contained in the hop er into either permounted between the drums anal having one or both of the spouts; asgesireti. 10

oppbsed spouts extending into. the feed In testimony whereof 1 afix mysignature openings of the opposed drums, a, furnace in presence of twowitnesses;

5 located beneath the hopper to heat thesame HENRY M. KINGSLEY. [L. 8:]

and between the drums endLhav'ing ducts Witnesses: leadingto the feedopenings of the drums JAMS SYKEs',

beneath. seid spouts, and means for directing THOS- B. Gkrenmes.

